Gas-engine.



C. W. AGERELLE GAS ENGINE.

APPLICATION FILED MAY 6.1912. RENEWED NOV. 20. 1915.

Patented July 3, 1917.

2 SHEET.SSHEET l- 77 252655651 fnve 72 I50 7",

9E4? I CarZe W are ZZ C. W. AGERELL.

GAS ENGINE.

APPLICATION FILED MAY 6. 1912. RENEWED NOV. 20, me.

1,55% Patented July 3, 1917.,

2 SHEETS-SHEET 2.

Atiorngyp,

v which the following is a ENE I v i Lns w. aeEnnLL,

or cnrcaeo, ILLnvoIsL Gas-Emerita.

neansso.

Application filed May 6, 1912, Serial No. 695,441.

To all whom it may concern:

Be it known that 1, CHARLES W. Acnnsnn, a citizen of the United States, residin at Chicago, in the county of Cook and tate of Illinois, have invented a certain new and.

useful Improvement in Gas-Engines, of

ecification.

My invention relates to improvements in gas engines and is illustrated diagrammatically in one form in the accompanying drawings, whereinv Figure l is a side elevation with parts broken away and'partsin section;

- I ports closed;

Fig. 2, a section along the line 22 of ig. 3,a detail plan view of the valve seat; Fig. 4., a detail plan view showing the valve resting upon the valve seat in the same position as that shown in Figs. 1 and 2 with the inlet open;

Fig. 5 is a similar view showing all the Fig. 6, a similar view showing the exhaust open; 1

Fig. 7 is a plan view of the valve disk; Fig. 8, a detail sideelevation of the modi-- tied form.

Like parts are indicated by like letters in all the figures.

The engine base A, which carries at its top the water-jacketed engine cylinder A, supports the bearings A A3 in which is rotatably mounted the crank shaft A having the crank A. The piston A reciprocates in the cylinder A and is connected by means of the, rod A to the crank of the cylinder adjacent its top and contains the rotatable valve disk C rigidly mounted on the shaft C i The crank C is mounted on the'shaft C and carries pivotally mounted thereon the link C which is pivotally mounted at the other end on the cam pin B The valve disk C is in slidable and rotatable contact with the valve seat plate (3 which forms one wall of the valve cham- Specificaticn of Letters Patent.

Renewed November 20, L916. Serial No. 132,494.

her 0 and which has the four radially arranged ports C C vC and (l therein. The ports C C lead to the exhaust chamber D from which discharges the exhaust pipe D and the ports C 0 lead to the intake chamher 1) which is supplied by the intake pipe D The valve disk C is provided with the two ports E E and the single larger port E The ports C C C G in the valve Patented July 3, 191 t.

seat are separated each by an angle of 90 and the ports E E and E are so arranged thatwhen one side of the be in register with theport C and when the port E is located intermediate the ports 0 C the ports E E will be out of register with any of the ports in the valve seat and when the port E is in register on its opposed side with the port C the 'ort E will,

be in register with the port C. y this arrangement as the valve disk oscillates the port E is at one time in register with the exhaust port and at another time in register with the intake port, and the port E is at one time in register with the exhaust port and at another time closed and the port E is at one time in register with the intake port and at another time closed. In other words, the port E acts always as an exhaust port, the port E always as an intake port and the port E alternately as an exhaust and intake port.

The housing F contains the exhaust and port E is in register with the port C theport E will intake chambers D D and carries on its upper side the grease cup F which discharges through the passage F to the bearing surface C to a point beneath the valve disk G At this point the passage communicates with the grooves F F which communicate, as indicated, with the oiling groove system surrounding the intake and exhaust ports. I

In the modified form indicated i Fig. 8 the valve disk, valve seat and intake and exhaust chambers are located at the head of the cylinder instead of on one side and,

therefore, a cylindrical combustion chamber is provided. When this arrangement is used the link G is substituted for the link 0 and it is pivotally mounted to the bell crank lever G pivoted on the cylinder head G This bell crank lever carries at the other end the ball and socket joint G which carries the link G pivoted. on the arm G to rock the shaft G? to operate the valve.

The spring II surrounds the shaft 0 and shaft Gr and presses at one side on the sleeve H and at the other side on the casing F or the cylinder head G as the case may be, to yieldingly hold the valve disk against the valve seat and thus came the valve to seat snugly but at the same time pre ent any binding or scarring such as might be caused by the differential expansion and contraction caused by change in temperature.

It will be evident that, whileI have shown in my drawings an operative devi e, still many changes might be made in size, shape and arrangement of pa :ts witneat departing materially from the spirit )1 my invention, and I wish therefore that my drawings be I regarded as in a sense diagrammatic.

- cillating to hold the cam roller in the correct position.

The shape of the cam slot is such that the timing of the valve is as follows: Supposing the piston .to be going up on the exhaust stroke the valve disk will be rotated so that two of the ports will be in register with the two exhaust ports. The cam is designed so that there will be no movement of the valve disk until just as the end of the stroke is reached. At this instant th-t cam will cause the link to move and oscillate the valve disk so as to bring two of the ports in the valve disk into register with the two intake ports.

This condition continues until the end of the downward suction stroke. Just as the piston reaches the end of the suction stroke the cam causes the valve disk to rotate to close the ports and the compression stroke takes place without any further rotation of the valve disk. The firing stroke also takes place without any further rotation of the valve disk and, just as the end of the firing stroke is reached when the pressure in the cylinder 1 a minimum, the disk opens the exhaust port. This cycle will continue indefinitely. It will be noted that the cam slot is carefully designed so that every motion of the valve disk will take place only at times when the pressure is least in the valve chamber and this valve disk movement will be very rapid and alternated with long periods of rest. By this arrangement there is very slight danger of scarring or binding the valve disk. But small power would be required to rotate or oscillate the valvedisk because the move-- ment takes place when there is very little pressure tending to force the disk upon its seat and the firing and compression stroke will take place with the valve practically at rest at all times, thus preventing to a very large extent the possibility of carbonizing,

pittin and the like which would result in loss of compression or loss of power.

I claim:

1. In a combustion engine a fiat valve seat, v

two intake and two exhaust ports in said seat and a perforate valve disk controlling them, and means for oscillating said disk to interniitrently bring the perforations in said disk 4 into register with the ports.

2. In a combustion englne a flat valve seat,

two intake and two exhaust ports in said seat and a valve disk controlling them, said valve disk being located in the combustion chamber, and means for oscillating said disk to intermittently bring theperforations in said disk into register with the ports.

3. In a combustion engine a valve comprising a flat perforate disk, the perforations therein being three in -number, one of them being twice the size of either of the other valve disk, one of said perforations serving alternately as an intake and an exhaust port, one of the others serving only as an intake and one only as an exhaust port.

6. In a combustion engine a flat valve seat, two intake and two exhaust ports therein, said ports being separated by angles of 90, a perforate valve disk controlling said ports and means for oscillating said disk to open and close both intake and exhaust ports in response to the movement of the engine.

7 In a combustion engine a fiat valve seat, intake and exhaust ports in said seat arranged 90 .each from that adjacent to it, said ports being bounded on their inner and outer sides by concentric curved lines and on their other sides by radii and an oscillating valve disk on the side oscillating about the center of said circle to control said ports.

Signed at Chicago, Illinois, this 2nd day of May 1912.

CHARLES W. AGERELL.

'Witnesses:

F. W. PARKER, Jr., LULU JORDAN.

copies of this patent may he obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

